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<code data-language="shell">#!/usr/bin/env bash
# Copyright (c) 2011 Sam Stephenson
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# &quot;Software&quot;), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

RUBY_BUILD_VERSION=&quot;20120216&quot;

set -E
exec 3&lt;&amp;2 # preserve original stderr at fd 3

resolve_link() {
  $(type -p greadlink readlink | head -1) &quot;$1&quot;
}

abs_dirname() {
  local cwd=&quot;$(pwd)&quot;
  local path=&quot;$1&quot;

  while [ -n &quot;$path&quot; ]; do
    cd &quot;${path%/*}&quot;
    local name=&quot;${path##*/}&quot;
    path=&quot;$(resolve_link &quot;$name&quot; || true)&quot;
  done

  pwd
  cd &quot;$cwd&quot;
}

build_failed() {
  { echo
    echo &quot;BUILD FAILED&quot;
    echo

    if ! rmdir &quot;${TEMP_PATH}&quot; 2&gt;/dev/null; then
      echo &quot;Inspect or clean up the working tree at ${TEMP_PATH}&quot;

      if file_is_not_empty &quot;$LOG_PATH&quot;; then
        echo &quot;Results logged to ${LOG_PATH}&quot;
        echo
        echo &quot;Last 10 log lines:&quot;
        tail -n 10 &quot;$LOG_PATH&quot;
      fi
    fi
  } &gt;&amp;3
  exit 1
}

file_is_not_empty() {
  local filename=&quot;$1&quot;
  local line_count=&quot;$(wc -l &quot;$filename&quot; 2&gt;/dev/null || true)&quot;

  if [ -n &quot;$line_count&quot; ]; then
    words=( $line_count )
    [ &quot;${words[0]}&quot; -gt 0 ]
  else
    return 1
  fi
}

install_package() {
  install_package_using &quot;tarball&quot; 1 $*
}

install_git() {
  install_package_using &quot;git&quot; 2 $*
}

install_package_using() {
  local package_type=&quot;$1&quot;
  local package_type_nargs=&quot;$2&quot;
  local package_name=&quot;$3&quot;
  shift 3

  pushd &quot;$TEMP_PATH&quot; &gt;&amp;4
  &quot;fetch_${package_type}&quot; &quot;$package_name&quot; $*
  shift $(($package_type_nargs))
  make_package &quot;$package_name&quot; $*
  popd &gt;&amp;4

  echo &quot;Installed ${package_name} to ${PREFIX_PATH}&quot; &gt;&amp;2
}

make_package() {
  local package_name=&quot;$1&quot;
  shift

  pushd &quot;$package_name&quot; &gt;&amp;4
  before_install_package &quot;$package_name&quot;
  build_package &quot;$package_name&quot; $*
  after_install_package &quot;$package_name&quot;
  fix_directory_permissions
  popd &gt;&amp;4
}

fetch_tarball() {
  local package_name=&quot;$1&quot;
  local package_url=&quot;$2&quot;

  echo &quot;Downloading ${package_url}...&quot; &gt;&amp;2
  { curl &quot;$package_url&quot; &gt; &quot;${package_name}.tar.gz&quot;
    tar xzvf &quot;${package_name}.tar.gz&quot;
  } &gt;&amp;4 2&gt;&amp;1
}

fetch_git() {
  local package_name=&quot;$1&quot;
  local git_url=&quot;$2&quot;
  local git_ref=&quot;$3&quot;

  echo &quot;Cloning ${git_url}...&quot; &gt;&amp;2
  { git clone --depth 1 --branch &quot;$git_ref&quot; &quot;$git_url&quot; &quot;${package_name}&quot;
  } &gt;&amp;4 2&gt;&amp;1
}

build_package() {
  local package_name=&quot;$1&quot;
  shift

  if [ &quot;$#&quot; -eq 0 ]; then
    local commands=&quot;standard&quot;
  else
    local commands=&quot;$*&quot;
  fi

  echo &quot;Installing ${package_name}...&quot; &gt;&amp;2

  for command in $commands; do
    &quot;build_package_${command}&quot;
  done
}

build_package_standard() {
  local package_name=&quot;$1&quot;

  if [ -z &quot;${MAKEOPTS+defined}&quot; ]; then
    MAKE_OPTS=&quot;$MAKEOPTS&quot;
  elif [ -z &quot;${MAKE_OPTS+defined}&quot; ]; then
    MAKE_OPTS=&quot;-j 2&quot;
  fi

  { ./configure --prefix=&quot;$PREFIX_PATH&quot; $CONFIGURE_OPTS
    make $MAKE_OPTS
    make install
  } &gt;&amp;4 2&gt;&amp;1
}

build_package_autoconf() {
  { autoconf
  } &gt;&amp;4 2&gt;&amp;1
}

build_package_ruby() {
  local package_name=&quot;$1&quot;

  { &quot;$RUBY_BIN&quot; setup.rb
  } &gt;&amp;4 2&gt;&amp;1
}

build_package_ree_installer() {
  local options=&quot;&quot;
  if [[ &quot;Darwin&quot; = &quot;$(uname)&quot; ]]; then
    options=&quot;--no-tcmalloc&quot;
  fi

  # Work around install_useful_libraries crash with --dont-install-useful-gems
  mkdir -p &quot;$PREFIX_PATH/lib/ruby/gems/1.8/gems&quot;

  { ./installer --auto &quot;$PREFIX_PATH&quot; --dont-install-useful-gems $options $CONFIGURE_OPTS
  } &gt;&amp;4 2&gt;&amp;1
}

build_package_rbx() {
  local package_name=&quot;$1&quot;

  { ./configure --prefix=&quot;$PREFIX_PATH&quot; --gemsdir=&quot;$PREFIX_PATH&quot;
    rake install
  } &gt;&amp;4 2&gt;&amp;1
}

build_package_maglev() {
  build_package_copy

  { cd &quot;${PREFIX_PATH}&quot;
    ./install.sh
    cd &quot;${PREFIX_PATH}/bin&quot;
    echo &quot;Creating symlink for ruby*&quot;
    ln -fs maglev-ruby ruby
    echo &quot;Creating symlink for irb*&quot;
    ln -fs maglev-irb irb
  } &gt;&amp;4 2&gt;&amp;1
  echo
  echo &quot;Run &#39;maglev start&#39; to start up the stone before using &#39;ruby&#39; or &#39;irb&#39;&quot;
}

build_package_jruby() {
  build_package_copy
  cd &quot;${PREFIX_PATH}/bin&quot;
  ln -fs jruby ruby
  install_jruby_launcher
  remove_windows_files
}

install_jruby_launcher() {
  cd &quot;${PREFIX_PATH}/bin&quot;
  { ./ruby gem install jruby-launcher
  } &gt;&amp;4 2&gt;&amp;1
}

remove_windows_files() {
  cd &quot;$PREFIX_PATH&quot;
  rm -f bin/*.exe bin/*.dll bin/*.bat bin/jruby.sh
}

build_package_copy() {
  mkdir -p &quot;$PREFIX_PATH&quot;
  cp -R . &quot;$PREFIX_PATH&quot;
}

before_install_package() {
  local stub=1
}

after_install_package() {
  local stub=1
}

fix_directory_permissions() {
  # Ensure installed directories are not world-writable to avoid Bundler warnings
  find &quot;$PREFIX_PATH&quot; -type d -exec chmod go-w {} \;
}

require_gcc() {
  local gcc=&quot;$(locate_gcc || true)&quot;
  if [ -z &quot;$gcc&quot; ]; then
    { echo
      echo &quot;ERROR: This package must be compiled with GCC, and we&quot;
      echo &quot;couldn&#39;t find a suitable \`gcc&#39; binary on your system.&quot;
      echo &quot;Please install GCC and try again.&quot;
      echo

      if [ &quot;$(uname -s)&quot; = &quot;Darwin&quot; ]; then
        echo &quot;As of version 4.2, Xcode is LLVM-only and no longer&quot;
        echo &quot;includes GCC. You can install GCC with these binary&quot;
        echo &quot;packages on Mac OS X:&quot;
        echo
        echo &quot;https://github.com/kennethreitz/osx-gcc-installer/downloads&quot;
        echo
      fi
    } &gt;&amp;3
    return 1
  fi

  export CC=&quot;$gcc&quot;
}

locate_gcc() {
  local gcc gccs
  IFS=: gccs=($(gccs_in_path))

  verify_gcc &quot;$CC&quot; ||
  verify_gcc &quot;$(command -v gcc || true)&quot; || {
    for gcc in &quot;${gccs[@]}&quot;; do
      verify_gcc &quot;$gcc&quot; &amp;&amp; break || true
    done
  }

  return 1
}

gccs_in_path() {
  local gcc path paths
  local gccs=()
  IFS=: paths=($PATH)

  shopt -s nullglob
  for path in &quot;${paths[@]}&quot;; do
    for gcc in &quot;$path&quot;/gcc-*; do
      gccs[&quot;${#gccs[@]}&quot;]=&quot;$gcc&quot;
    done
  done
  shopt -u nullglob

  printf :%s &quot;${gccs[@]}&quot;
}

verify_gcc() {
  local gcc=&quot;$1&quot;
  if [ -z &quot;$gcc&quot; ]; then
    return 1
  fi

  local version=&quot;$(&quot;$gcc&quot; --version || true)&quot;
  if [ -z &quot;$version&quot; ]; then
    return 1
  fi

  if echo &quot;$version&quot; | grep LLVM &gt;/dev/null; then
    return 1
  fi

  echo &quot;$gcc&quot;
}

version() {
  echo &quot;ruby-build ${RUBY_BUILD_VERSION}&quot;
}

usage() {
  { version
    echo &quot;usage: ruby-build [-v|--verbose] definition prefix&quot;
    echo &quot;       ruby-build --definitions&quot;
  } &gt;&amp;2

  if [ -z &quot;$1&quot; ]; then
    exit 1
  fi
}

list_definitions() {
  { for definition in &quot;${RUBY_BUILD_ROOT}/share/ruby-build/&quot;*; do
      echo &quot;${definition##*/}&quot;
    done
  } | sort
}



unset VERBOSE
RUBY_BUILD_ROOT=&quot;$(abs_dirname &quot;$0&quot;)/..&quot;

case &quot;$1&quot; in
&quot;-h&quot; | &quot;--help&quot; )
  usage without_exiting
  { echo
    echo &quot;  -v/--verbose     Verbose mode: print compilation status to stdout&quot;
    echo &quot;  --definitions    List all built-in definitions&quot;
    echo
  } &gt;&amp;2
  exit 0
  ;;
&quot;--definitions&quot; )
  list_definitions
  exit 0
  ;;
&quot;--version&quot; )
  version
  exit 0
  ;;
&quot;-v&quot; | &quot;--verbose&quot; )
  VERBOSE=true
  shift
  ;;
esac


DEFINITION_PATH=&quot;$1&quot;
if [ -z &quot;$DEFINITION_PATH&quot; ]; then
  usage
elif [ ! -e &quot;$DEFINITION_PATH&quot; ]; then
  BUILTIN_DEFINITION_PATH=&quot;${RUBY_BUILD_ROOT}/share/ruby-build/${DEFINITION_PATH}&quot;
  if [ -e &quot;$BUILTIN_DEFINITION_PATH&quot; ]; then
    DEFINITION_PATH=&quot;$BUILTIN_DEFINITION_PATH&quot;
  else
    echo &quot;ruby-build: definition not found: ${DEFINITION_PATH}&quot; &gt;&amp;2
    exit 1
  fi
fi

PREFIX_PATH=&quot;$2&quot;
if [ -z &quot;$PREFIX_PATH&quot; ]; then
  usage
fi

if [ -z &quot;$TMPDIR&quot; ]; then
  TMP=&quot;/tmp&quot;
else
  TMP=&quot;${TMPDIR%/}&quot;
fi

SEED=&quot;$(date &quot;+%Y%m%d%H%M%S&quot;).$$&quot;
LOG_PATH=&quot;${TMP}/ruby-build.${SEED}.log&quot;
TEMP_PATH=&quot;${TMP}/ruby-build.${SEED}&quot;
RUBY_BIN=&quot;${PREFIX_PATH}/bin/ruby&quot;
CWD=&quot;$(pwd)&quot;

exec 4&lt;&gt; &quot;$LOG_PATH&quot; # open the log file at fd 4
if [ -n &quot;$VERBOSE&quot; ]; then
  tail -f &quot;$LOG_PATH&quot; &amp;
  trap &quot;kill 0&quot; SIGINT SIGTERM EXIT
fi

export LDFLAGS=&quot;-L&#39;${PREFIX_PATH}/lib&#39; ${LDFLAGS}&quot;
export CPPFLAGS=&quot;-I&#39;${PREFIX_PATH}/include&#39; ${CPPFLAGS}&quot;

unset RUBYOPT
unset RUBYLIB

trap build_failed ERR
mkdir -p &quot;$TEMP_PATH&quot;
source &quot;$DEFINITION_PATH&quot;
rm -fr &quot;$TEMP_PATH&quot;
trap - ERR
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